Helfen, M./Nicklich, M. (2014): Multi-employer networks and wage inequality: Challenges and opportunities for labor relations in an age of inter-organizational workforce segmentation, EGOS Colloquium, School of Management, Erasmus University Rotterdam.

Nicklich, M./Helfen, M. (2013): Between institutional continuity and de-institutionalization: Industrial Services as a parallel world of wage-setting, 10th European Conference of the International Labour and Employment Relations Association (ILERA) "Imagining new employment relations and new solidarities", Amsterdam.